Home / 13,230.72-18,257.28-7,262.36

Finding the Fourth Proportional to 13,230.72, 18,257.28 and 7,262.36

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Solution

The fourth proportional to 13,230.72, 18,257.28 and 7,262.36 is: 10,021.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,230.72 : 18,257.28 = 7,262.36 : x
  2. Step 2: Convert to fraction form
    13,230.72/18,257.28 = 7,262.36/x
  3. Step 3: Cross multiply
    13,230.72x = 18,257.28 × 7,262.36
  4. Step 4: Simplify right side
    13,230.72x = 132,590,939.98
  5. Step 5: Solve for x
    x = 132,590,939.98/13,230.72
  6. Step 6: Final answer
    x = 10,021.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.